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M. L. CROSS, administratrix.

WOOD PRINTING MACHINE. 110.317.518. Patented May 12, 1885.

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M. L. (moss, administratfix. W001) PRINTING MACHINE. No. 317,518. Patented May 12, 18.85.

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UNITED STATES PATENT OFFICE.

JOHN R. CROSS, OF CHICAGO, ILLINOIS; MARY L. CROSS, ADMINISTRATRIX OF JOHN R. CROSS, DECEASED, ASSIGNOR, BY MESNE ASSIGNMENTS, TO

MAR-Y L. CROSS, OF SAME PLACE.

WOOD-PRINTING MACHINE.

SEECIPICATION forming part of Letters Patent No. 317,518, dated May 12, 1885.

Application filed June 12, 1882. (No model.)

To all whom, it may concern:

Be it known that I, JOHN R. Onoss, of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Power ood-Printing Machines, of which the following is a specification.

This invention relates to wood-printing machines, and more especially to the manner of to supporting and adjusting the bed thereof, and to a feature whereby the impression-cylinder may be conveniently adjusted to register correctly with the feed mechanism.

The nature of the invention fully appears in the subjoined description and the accompanying drawings, in which latter Figure 1 is a perspective view of my improved machine. Fig. 2 is a partial vertical section showing the bed, the mechanism for adjusting and supporting it, and the feed-belt. Fig. 3 is a plan of said adjusting mechanism detached. Fig. 4 shows a detail section of the clutch by which the parts of the cylinderdriving shaft are united. Fig. 5 is an enlarged partial longitudinal section of the endless feed and the protecting rubber blanket sometimes employed therewith.-

Similar letters of reference indicate like parts wherever used in the several figures.

In said drawings, A represents the frame of the machine; B B, the fast and loose pulleys carrying the power-giving belt by which the machine is operated, and B the drivingshaft.

The latter carries a bevel-gear which engages 5 with the bevel-gear C upon the lower end of the cylinder-driving shaft. This shaft is a vertical one, and is made in two parts, C C", the former whereof is provided with verticallyadjustable gear D, meshing with the gear D 0 upon the shaft of the lower cylinder, D and the latter whereof is provided with a gear, E, meshing with a gear, E, upon the shaft of the impression or die cylinder E". The parts 0 G are united by a suitable coupling, which 5 will allow them to be disconnected whenever the feed and the impression-cylinder need change in their relative adjustment. Such a clutch is illustrated, and consists of the collar 0, keyed upon the part 0, a collar, 0, upon the part C, and an interiorly-threaded ring, 0 which engages with the thread upon the exterior of collar 0, and is given an inwardly projecting rim, engaging with the outward rim, 0, upon the collar 0". When the clutch is to be closed, the ring is turned down upon the 5 5 collar 0 until the opposing surfaces of the two collars are brought into firm contact. The ring may be operated by asemicircular wrench, entering the holes 0 at opposite sides thereof.

The shaft 0 C is provided with bearings at c and c and at its upper end carries also a pinion, 0 through which and suitable connectinggears the inking mechanism and rollers F f f f are actuated.

G is the bed of the machine, and it is pivoted to the frame upon transverse pivots 9, so it may be tipped thereon to accommodate the various thicknesses of stuff operated upon, and also, if required, when'the feed and cylinder are to be adjusted. It carries the bear- 7o ings of the lower cylinder. The cylinder end of the bed is supported upon screw-columns G, which are stepped at 9 upon the frame. These columns enter threaded boxes in serted in the bed in recesses, which also contain rubber cushions as clearly indicated in Fig. 2. These screws are operated in adj usting the bed by an endless chain, G which is operated by a hand-wheel, G and passes from thence around guidewheels 9 and sprock- 8o ets 9 upon the screw-columns. Uniformity in the operation of both columns is thus ob tained, and the needed range of adjustment for the bed is secured.

The rubber-cushion already mentioned, which 8 5 lies between the box at the head of each of the columns and the top of the recess in the bed, allows the bed to yield a little to accommodate irregularities in the material being printed.

Through the handle H and connecting-gears 0 h is operated the right and left screw h, by which the sides H of the hopper for holding the material to be printed upon are adjusted. From the bottom of this hopper the boards or pieces of stuff are fed in between the cylinders one at a ti me by two endless feed-chains,I, conare provided with sprocket-teeth 'i to engage.

therewith- At the opposite end of the bed the chains pass around sprocket-rollers i.

When the blanks are to be printed upon both sides, it is necessary to make some provision to avoid defacing the already printed side when the other side is to be printed. Forthis purpose a rubber sheet or blanket, m, is secured to the feed-chains I under the cross- ,bars, upon which said already-printed faces lie during the passage of the blanks through the machine, so that all danger of abrasion or scratching is obviated. The operation of the machine will be sufficiently apparent to those skilled in the art withoutbeing detailed. Sometimes two pieces of 'material are passed through the machine simultaneously and side by side. These pieces may vary slightly in thickness, so that when they enter between the cylinders,if there were no other means of insuring their discharge,the thinner of the two might fail to pass out unless, indeed, the cylinders exerted sufficient pressure thereon to compel that result. So, also, if any of the blanks were thinner than the average they might fail for the same reason to pass entirely through the machine. To obviate this evil,I adopt the endless-feed plan shown, and by passing it over the ends of one of the cylinders cause the cross-bars to actuate the boards at a speed uniform with the speed of the cylinders until they have moved entirely beyond the impression-point.

Instead of the endless chains shown other descriptions of belts may be used, and it is not necessary that they be placed at the sides so as to pass over the ends of the cylinder. Indeed,a single belt centrally placed may be substituted,if it is sunken in the cylinder so as to present a surface flush with that of the rest of the cylinder.

B y making the shaft which operates the two cylinders in twoparts, with the coupling where by those parts are united located between the cylinders, the adjustment of the type-cylinder and the feed relative to each other is permitted to be changed by simply loosening the coup ling.

I claim- 1. In a wood-printing machine, the bed can rying the lower cylinder, pivoted upon transverse pivots and provided with adjustable supports at its cylinder end, substantially as set forth.

2. In a. wood-printing machine, the pivoted bed provided with supports at the cylinder end, having interposed rubber cushions, substantially as set forth.

3. In a wood-printing machine, the combination, with the pivoted bed,of the screW-columns supporting the the end of the same, the sprocket-chain by which the columns are uniformly adjusted, the wheels around which said chain passes, and the hand-wheel for actuating the chain, substantially as specified.

4. In a wood-printing machine, the type cylinder, the impression-cylinder operating the endless feed, and said feed, in combination with the shaft for operating said cylinders, when said shaft is made in two parts, substantially as and for the purpose specified.

5. In a wood-printing machine, the combination, with the endless feed, of a blanket for preventing injury to the under surface of the wood blanks secured to and traveling with said feed, substantially as specified.

6. In a wood-printing machine, the combination, with the type and impression cylinders, of an endless feed passing around the impression cylinder, and consisting of the sprocket-chains and the cross-bars, the latter being constructed and serving to connect such chains, and to feed the boards to the cylinders at the proper intervals, substantially as specified.

JOHN R. cnoss.

Witnesses:

H. M. MUNDAY, T. EVERETT BROWN. 

